On All Saints Day 1930, the parish celebrated its 75th anniversary with special services presided over by Bishops Reginald Weller and Harwood Sturtevant. There also was a dinner on the previous Friday evening, with speeches by the mayor and other notables.

The 80th anniversary of the Episcopal parish in Appleton was celebrated on All Saints Sunday 1936 with regular services, a notice in the Sunday bulletin, and a United Thank Offering (UTO) collection.

At 3:50 a.m., November 30, 1949, a taxi driver reported that a fire had broken out at All Saints. The fire started in the basement and burned through the floor, causing the altar to fall into the basement and charring the rest of the interior of the church. The altar, which was fairly new, the reredos, the organ, the carved choir stalls, a Tiffany window, and the bishop's chair were destroyed, but the baptistry was spared. Vestments and other fabrics were smoke-damaged. The total loss was estimated at $75,000.

The congregation worshiped at the Masonic Temple during reconstruction. The insurance coverage on the building had recently been upgraded and was sufficient to cover $90,000 of the $150,000 needed. The additional $60,000 was immediately subscribed by the congregation. Hoffman Construction was the contractor for the rebuilding. Memorials were rigorously encouraged and reported on for the next few years. The first service in the restored church was on Christmas Eve 1950.

A new organ was installed in December 1951.This one had 20 ranks, 1,400 pipes and two manuals; had been designed by LaVahn Maesch, professor of organ at Lawrence College; and was built by the M. P. Moller Organ Company of Hagerstown, Maryland. Ernest White of the Moller Company oversaw the tonal design.

Bishop Sturtevant officially rededicated All Saints with special services featuring the new organ on All Saints Sunday, 1952.

In 1955, All Saints purchased the corner property at Drew and Washington Streets.Since the rectory was directly behind the church, All Saints now owned all the land from College along Drew Street.

In 1956, the parish celebrated its 100th anniversary with a week-long celebration. Events included Bishop William H. Brady visiting and confirming on Sunday, Nov. 4, an Altar Guild reunion on Monday, a Silver Tea for the long-time members of the Women's Auxiliary on Tuesday, and a service of Evensong on Wednesday with the Rev. Edmund Ringland, dean of St. Paul's Cathedral, as preacher. On Thursday, there was a lecture on "The Romance of Canterbury Cathedral," and on Friday, there was a Requiem Eucharist in commemoration of departed parishioners. On Saturday, the Centennial Banquet was held at the Masonic Temple.

In October 1958, All Saints and Lawrence College together purchased the house that bordered the Rosebush property and All Saints Church. The property was split so that the lot lines from College to Washington would be straight.

In 1959, building plans for the parish center were approved, and the rectory and the neighboring house on the corner were torn down.

Construction began in 1960 and was completed in January 1961. Parish "work parties" painted and did other finishing work. The dedication of the parish center was on April 30, 1961.

All Saints acquired the property north of the Masonic Temple across Drew Street in 1967. It was rented out until 1971, when it was torn down to build the parking lot.

All Saints helped with the celebration for the 100th anniversary of the Diocese of Fond du Lac in 1975.